Lubricator.



No. 845,209. PATENTED FEB. 26, 1907. J I. WARREN.

LUBRICATOR.

APPLICATION FILED D1307, 1906.

( nventor,

I The present invention has for its object to i the purpose thereof isto material y improve respects providing a simple and effective v UNITEDSTATES PATENT OFFICE.

JAMES I. WARREN, or QTTUMWA, IOWA.

' LUBRICATO-R.

azzwhom, it may concern}; i

e it known that I, Janna-I. WARREN, a en of the UnitedStates, residingat-Ottuifnwa, in the county of Wapello and State I of l'owa, haveinvented certain new and use ful Improvements in Lubricators; and I dohereby declare that the following is a-full,

. clear, and exact descri tionof the same, reference being had to t eannexed drawings,- 19 :making a part of this specification, and to theletters and figures of reference marked thereon.

provide a grease-cup or lubricator fof'that class-in which apiston .or'plunger is ern I f loyed, a spring bearing thereon, andiniea'ns 3 oradjusting the tension of the s ring; and

the construction of such device'whereby a perfect action of the pistonor plunger is obi tained, the tension of the spring easily and readilyadjusted and held in its adjustment ',-by a spring-actuating means, andin other grease-cup or lubricator.

The invention consists in a lubricator constructed substantially asshown in the drawings and hereinafter described and claimed.

Figure 1 of the drawings is a sectional elevation of a lubricatorconstructed in accordance with my invention; Fig. 2, a perspective viewof the regulating-nut; .Fig. 3, a .similar view of the spring whichengages the nut.

In the accompanying drawings, A represents a suitable receptacle forcontaining the lubricant, and within this receptacle above the lubricantis a'pistori B, having a coiled spring a, encircling the stem b of saidpiston and bearing thereon at its lowerend. The stem b of the piston Bextends up through a screw-threaded extension C, depending from aflat-sided nut D and also through the nut, as shown in 1 of thedrawings.

The exterior screw-threads upon the extension C engage interiorscrew-threads on the upper end of the receptacle A, and said extensionhas a mortised seat 0 upon the under side thereof for the upper end ofthe spring a to hold the spring iii-position, said i Specification ofLetters Patent.

Application filed December\7.1906. Serial No. 346,688.

Patented Feb. 26, 1907.

s ring being larger at one end and smaller at theother; which makes amore uniform feed. A flat curved 5 ring E is employed to keep theguide-nut an its extension from working out, thelower end of the springbeing doubled upon itself, as shown at d, to increase its strength atlower end, as shown 'in Fig. 3 of the drawings; The upper end of thespring Eis curved around and.terminates in a fingers toengage a notch fon the nut D, as shown in Fig. lof the drawings. I

The double end (1 of the s ring is seated ina groove gin the extension8., and the spring extends above the u per end of the receptaole A,where it'may e readily manipulated.-

The spring kee s the screw extension 0 from turning an may be readilyreleased when'desired for turning the nut by first releasing the fingere from the notchf and withdrawing the spring.

The construction ofthe spring E serves the double purpose of' twosprings, the bent-up portion d forming an auxiliary spring to holdthe'lower end thereof in frictional contact with the interior wall ofthe receptacle A and the upper portion or mainspring adapted to engagethe nut I), thus providing a double spring to prevent the extensionC-from turning when once ad'usted and set.

'Havin now fully described my invention, what I c aim as new, and desireto secure by Letters Patent, is

A lubricator comprising a suitable'recep'tacle for the lubricant, aspring-actuated piston therein, a flat-sided nut with screw-threadedextension, having a notch and grooved'seat res ectively, and alocking-spring, the lower en of the spring being doubled u on itself toform an auxiliary spring adapte to engage the grooved seat in theextension and the 0 upper end of the spring being curved and terminatingin afinger to engage the notch in the nut, substantially as and for thepurpose set forth.

In testimony whereof I aflix my signature 9 5 in presence of twowitnesses.

JAMES I. WARREN.

Witnesses 1 E. L. RAY, M. B. CRANE.

